Philipp Lenssen of Google Blogoscoped is working on an upcoming book on Google Office:
I’m happy to tell you I’ve started writing a book with O’Reilly’s Maker Media group, currently titled Google Office Hacks! The book will not focus on search, but on the existing & growing applications suite Google provides. It will provide tricks to get things done with Google Docs, Google Spreadsheets, Gmail, Google Calendar, iGoogle, Google Analytics, Maps, YouTube, SketchUp, Presentations (if Google decides to release it!) and more…
For this book, we’d love to get your hacks in it too.
Check out Philipp’s blog post for more details, and keep an eye on Hackszine.com for more information – Link